<div
  style="
    border: 1px solid red;
    background: hsla(0, 50%, 50%, 0.2);
    padding: 0.5em;
  "
>
  <h1>Development site</h1>

  <p>
    You are viewing a site other than the official production site. It may not
    operate as you expect.
  </p>
</div>
